Copernical Team
A new possible explanation for the Hubble tension
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The universe is expanding. How fast it does so is described by the so-called Hubble-Lemaitre constant. But there is a dispute about how big this constant actually is: Different measurement methods provide contradictory values. This so-called "Hubble tension" poses a puzzle for cosmologists. Researchers from the Universities of Bonn and St. Andrews are now proposing a new solution: Using an alter OSIRIS-APEX to fly closer to Sun to reach Asteroid Apophis
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Reinvented as NASA's OSIRIS-APEX, the spacecraft formerly known as OSIRIS-REx is about to face the first major test of its mission to asteroid Apophis: it will fly closer to the Sun than ever before, exposing its components to higher temperatures than they were designed to endure.
At its closest approach (known as its perihelion) on Jan. 2, 2024, OSIRIS-APEX will be about 46.5 million mile Lift-off for EIRSAT-1, Ireland’s first ever satellite
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Six years of hard work and dedication paid off in spectacular fashion today, as the Educational Irish Research Satellite, EIRSAT-1, successfully blasted off from Vandenberg Space Force Base, California. Hitching a ride on a Space-X Falcon-9 launcher, the tiny satellite – measuring just 10.7cm x 10.7cm x 22.7cm – has now made history as Ireland’s first satellite!
EIRSAT-1 liftoff
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Video:
00:04:04
On 1 December 2023, at 19:19 CET (18:18 GMT), Ireland's first satellite EIRSAT-1 launched from Vandenberg Space Force Base in California, USA.
Built by students at University College Dublin under guidance of ESA’s Education Office, EIRSAT-1 is a 2-unit CubeSat carrying three experiments, including a novel gamma ray detector that will study some of the most luminous explosions in the universe.
The mission has been in development since the team was accepted to the ESA Academy Fly Your Satellite! programme in 2017. Over the past six years, the students have worked with ESA experts and acquired the professional competences needed
Europe is working on a multi-purpose habitat for the moon
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With NASA gearing up to send humans back to the moon in the next few years with the Artemis missions with the goal of establishing a permanent outpost at the lunar south pole, nations are making efforts to contribute to Artemis and a permanent presence on our nearest celestial neighbor.
Recently, the Italian Space Agency, formally known as Agenzia Spaziale Italiana (ASI), has taken steps to establish the first permanent outpost on the lunar surface, known simply as the Multi-Purpose Habitat (MPH). This endeavor was officially kicked by the ASI signing a contract with the French-based aerospace company, Thales Alenia Space, who specializes in space-based systems, including ground segments and satellites used for both Earth observation and space exploration.
Week in images: 27 November - 01 December 2023
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Week in images: 27 November - 01 December 2023
Discover our week through the lens
Prometheus prototype engine test
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00:00:24
Scenes from a 30-second burn with re-ignition of an early prototype of the Prometheus engine at ArianeGroup’s test facility in Vernon, France, on 20 October 2023.
The 100-tonne thrust class Prometheus burns liquid oxygen-liquid methane fuel. Methane is clean burning and simplifies handling, to help enable reusability and reduce the cost of ground operations before and after flight.
The engine is mounted in an early prototype of a reusable rocket stage, called Themis, which is being developed in parallel with the engine under contract from ESA. While engine testing continues, work is also underway to prepare a more advanced
New images of rare thunder
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ESA astronaut Andreas Mogensen has captured images of rare thunder phenomena as part of the Thor-Davis experiment on his Huginn mission.
Earth from Space: American Samoa
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The Copernicus Sentinel-2 mission shows us an amazing view of the tropical island of Tutuila, the largest in the American Samoa archipelago in the South Pacific Ocean. NASA's Educational CubeSats: Small Satellites, Big Impact
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Despite their small size, the satellites launching through NASA's CubeSat Launch Initiative (CSLI) missions have a big impact, creating access to space for many who might not otherwise have the opportunity. One recent mission tells the story of four teams of researchers and engineers who conceived, built, launched, and collected data from these shoebox-sized satellites, helping them answer a hos 
